18141

Appears in sequences

• Theorems from propositional calculus, translated into decimal digits.at n=30A101273
• Triangle read by rows: T(n,k) is the number of k-matchings in the C_n X P_3 graph (C_n is the cycle graph on n vertices and P_3 is the path graph on 3 vertices).at n=30A102089
• Egyptian fraction representation for the cube root of 49.at n=3A132524
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-2)*b(n-1), where a(0) = 2, a(1) = 4, b(0) = 1, b(1) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=14A296264
• Solution (a(n)) of the complementary equation a(n) = 2*a(n-1) - a(n-2) + b(n); see Comments.at n=43A305129
• Sum of the n-th maximal antirun of odd primes differing by more than two.at n=35A373405
• Integers k such that 511*2^k - 1 is prime.at n=34A387925
• G.f. A(x) satisfies A( x^2 + 2*x^3 + 2*A(x)^2 ) = 3*A(x)^2.at n=7A389474